 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.views.markers.internal;

 import org.eclipse.jface.viewers.ISelectionProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.actions.SelectionProviderAction;

 /**
  * ActionMarkerProperties is the action for opening a properties dialog.
  *
  */
 public class ActionMarkerProperties extends SelectionProviderAction {

     private IWorkbenchPart part;

     private String markerName;

     /**
      * Create a new instance of the receiver.
      *
      * @param part
      * @param provider
      * @param markerName
      * the name describing the specific type of marker.
      */
     public ActionMarkerProperties(IWorkbenchPart part,
             ISelectionProvider provider, String markerName) {
         super(provider, MarkerMessages.propertiesAction_title);
         setEnabled(false);
         this.part = part;
         this.markerName = markerName;
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.action.Action#run()
      */
     public void run() {
         if (!isEnabled()) {
             return;
         }
         Object obj = getStructuredSelection().getFirstElement();
         if (!(obj instanceof ConcreteMarker)) {
             return;
         }
         ConcreteMarker marker = (ConcreteMarker) obj;
         DialogMarkerProperties dialog = new DialogMarkerProperties(part
                 .getSite().getShell(), MarkerMessages.propertiesDialog_title, markerName);
         dialog.setMarker(marker.getMarker());
         dialog.open();
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.actions.SelectionProviderAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection)
      */
     public void selectionChanged(IStructuredSelection selection) {
         setEnabled(selection != null && selection.size() == 1);
     }
 }

